CAS OpenIR
A new additive 3-Isocyanatopropyltriethoxysilane to improve electrochemical performance of Li/NCM622 half-cell at high voltage
Wang, SL; Chen, SM; Gao, WQ; Liu, LL; Zhang, SJ; Wang, Shili; Chen, Shimou; Gao, Weiqun; Liu, Lili; Zhang, Suojiang
2019
Source PublicationJOURNAL OF POWER SOURCES
ISSN0378-7753
Volume423Pages:90
Abstract

In this paper, we propose a new electrolyte additive 3-Isocyanatopropyltriethoxysilane (IPTS) to improve the cycle stability and rate performance of Ni-Rich (LiNi0.6Co0.2Mn0.2O2) cathode half-cell. Density function theory calculations suggest that IPTS has higher HOMO energy than solvent, which can decompose preferentially. Moreover, we confirm the oxidative decomposition by the linear scanning cyclic voltammetry, which can achieve stable at a cutoff voltage of 2.5-4.5 Vs. (Li/Li+). The cyclic voltammetry curves at different scan rates indicate that the migration rate of lithium ions is higher in the cells with 0.5% additive than in the base electrolyte. After 150 cycles, the capacity retention rates in the base electrolyte and in the additive-containing electrolyte are 55.4% and 73.1%, respectively. X-ray photoelectron spectroscopy, scanning electron microscopy and transmission electron microscopy show that the additive is involved in film formation, and the obtained CEI film is very uniform and dense, which play a key role in stabilizing the electrolyte under high voltage.

KeywordLithium Ion Batteries Lithium-ion Batteries Electrolyte Lini0.6co0.2mn0.2o2 Cathode High-voltage Electrolyte Interface Oxide Additives Borate Stability Chemistry Storage Spinel Anode
SubtypeArticle
DOI10.1016/j.jpowsour.2019.03.046
WOS IDWOS:000466453700012
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28186
Collection中国科学院过程工程研究所
Recommended Citation
GB/T 7714
Wang, SL,Chen, SM,Gao, WQ,et al. A new additive 3-Isocyanatopropyltriethoxysilane to improve electrochemical performance of Li/NCM622 half-cell at high voltage[J]. JOURNAL OF POWER SOURCES,2019,423:90.
APA Wang, SL.,Chen, SM.,Gao, WQ.,Liu, LL.,Zhang, SJ.,...&Zhang, Suojiang.(2019).A new additive 3-Isocyanatopropyltriethoxysilane to improve electrochemical performance of Li/NCM622 half-cell at high voltage.JOURNAL OF POWER SOURCES,423,90.
MLA Wang, SL,et al."A new additive 3-Isocyanatopropyltriethoxysilane to improve electrochemical performance of Li/NCM622 half-cell at high voltage".JOURNAL OF POWER SOURCES 423(2019):90.
Files in This Item:
File Name/Size DocType Version Access License
A new additive 3-Iso(3350KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang, SL]'s Articles
[Chen, SM]'s Articles
[Gao, WQ]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang, SL]'s Articles
[Chen, SM]'s Articles
[Gao, WQ]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang, SL]'s Articles
[Chen, SM]'s Articles
[Gao, WQ]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.